Vanguard S&P Mid-Cap 400 ETF (IVOO) Gamma Exposure (GEX) & Greeks
Gamma exposure (GEX) analysis shows how options positioning creates dealer hedging pressure across strikes. Includes delta, vanna, charm, vomma, and vega exposure by strike price.
Vanguard S&P Mid-Cap 400 ETF (IVOO) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $5.34B, listed on AMEX, carrying a beta of 1.08 to the broader market. Invests in stocks in the S&P MidCap 400 Index, representing 400 medium-size U. public since 2010-09-09.
Snapshot as of May 15, 2026.
- Spot Price
- $122.35
- Net Gamma
- -$894
- Net Delta
- $782
- Net Vega
- -$75
- Gamma Concentration
- 0.34
As of May 15, 2026, Vanguard S&P Mid-Cap 400 ETF (IVOO) has negative net gamma exposure of $894 under the standard dealer-hedging convention. Net delta exposure is $782. Negative GEX means dealers are net short gamma: they must sell into weakness and buy into strength, amplifying realized volatility and accelerating directional moves.
IVOO Strategy Sizing in the Current GEX Regime
Vanguard S&P Mid-Cap 400 ETF is in a negative dealer-gamma regime ($894). Net dealer delta of $782 sets the size of the directional hedging flow that fires as spot moves. In this regime, momentum and breakout strategies fit the regime: long calls or puts, ratio backspreads, calendar spreads positioned for vol expansion. Realized volatility tends to overshoot implied during negative-gamma stretches, hurting indiscriminate short-vol exposure. The gamma-flip level - the spot price at which net dealer gamma changes sign - is the most actionable anchor for sizing: through-flip moves trigger qualitatively different hedging behavior than within-regime moves, so risk-defined structures sized to the current spot may not stay sized correctly if a flip is near.
Learn how gamma exposure is reported and how to read the data →
Frequently asked IVOO gamma exposure (gex) & greeks questions
- What is the current IVOO gamma exposure (GEX)?
- As of May 15, 2026, Vanguard S&P Mid-Cap 400 ETF (IVOO) net gamma exposure is negative at $894 under the standard dealer-hedging convention. Net dealer delta exposure is $782. GEX aggregates the gamma sitting on dealer books across all listed strikes and expirations.
- Is IVOO in positive or negative dealer gamma right now?
- IVOO is currently in negative dealer gamma. Dealers net short gamma must sell into weakness and buy into strength to maintain delta-neutrality, which amplifies realized volatility and tends to accelerate directional moves.
- What does IVOO GEX tell options traders?
- GEX is a regime indicator: positive-gamma regimes favor mean-reverting strategies (premium-selling near established ranges); negative-gamma regimes favor momentum and breakout strategies. The same options-strategy structure can be appropriate or inappropriate depending on the dealer-gamma regime, so reading the sign and magnitude of net GEX before sizing positions is standard practice.